校长对我们非常负责，他亲自为我们做一切事情．
The headmaster is so responsible that he does everything for us ．
Actually，there are many accidents by carelessness every year．（cause）
What happened to Kate？
She had a terrible and broken her right arm．（fall）
Mr．Black was asked to gave a at the beginning of the meeting．（speak）
Your new skirt is beautiful，Lily．
Thank you．Are you considering one for yourself （buy）．
Nowadays，people use WeChat in their daily life．（wide）